气候变化领域集成服务门户(CCPortal): Computation-guided design of high-performance flexible thermoelectric modules for sunlight-to-electricity conversion

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DOI	10.1039/d0ee01895c
	Computation-guided design of high-performance flexible thermoelectric modules for sunlight-to-electricity conversion
	Xu S.; Hong M.; Shi X.; Li M.; Sun Q.; Chen Q.; Dargusch M.; Zou J.; Chen Z.-G.
发表日期	2020
ISSN	17545692
起始页码	3480
结束页码	3488
卷号	13 期号:10
英文摘要	Due to the outstanding mechanical endurance and easy scale-up fabrication, printed poly(3,4-ethylenedioxithiophene):poly(styrenesulfonate) (PEDOT:PSS) films are a promising thermoelectric material. However, their low thermoelectric performance, unreasonable device design and insufficient temperature gradient have significantly hindered the development of flexible PEDOT:PSS-based thermoelectric devices for their practical applications. To overcome these challenges, here we propose a novel method combining ethylene glycol pre-treatment and H2SO4 post-treatment plus tetrakis(dimethylamino)ethylene post-treatment in sequence to engineer printed flexible PEDOT:PSS films. The ethylene glycol pre-treatment strengthens the selective removal of excess non-ionized PSS to create a clear path for the further H2SO4 post-treatment, and in turn induces a structural conformation transition of the conjugated carbon chains in PEDOT:PSS films. The final tetrakis(dimethylamino)ethylene post-treatment induces a high power factor of 224 µW m-1 K-2 at room temperature by tuning the oxidation level of the fabricated PEDOT:PSS films. More importantly, we employ thermodynamic numerical analysis to computationally design and assemble a flexible module using the optimized PEDOT:PSS films. Such a module yields a record-high power output density of 3 µW cm-2 at a temperature gradient of 44.5 K induced by harvesting sunlight, and has no notable performance change after mechanical (1000 bending cycles), air stability (30-day air exposure) and thermal stability (20 heating and cooling cycles) tests. This study indicates that our computation-guided module can be widely applied to supply power for micro-watt electronics by virtue of the high-efficiency sunlight-to-electricity conversion. © The Royal Society of Chemistry.
英文关键词	Aliphatic compounds; Bending tests; Carbon films; Ethylene; Ethylene glycol; Polyols; Thermal gradients; Thermoelectricity; Heating and cooling cycles; Poly(styrene sulfonate); Structural conformations; Tetrakis(dimethyl-amino)ethylene; Thermo-Electric materials; Thermo-electric modules; Thermoelectric devices; Thermoelectric performance; Conducting polymers
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189537
作者单位	Materials Engineering, University of Queensland, Brisbane, QLD 4072, Australia; Centre for Future Materials, University of Southern Queensland, Springfield, QLD 4300, Australia; School of Energy Science and Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin, 15001, China; Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, QLD 4072, Australia
推荐引用方式 GB/T 7714	Xu S.,Hong M.,Shi X.,et al. Computation-guided design of high-performance flexible thermoelectric modules for sunlight-to-electricity conversion[J],2020,13(10).
APA	Xu S..,Hong M..,Shi X..,Li M..,Sun Q..,...&Chen Z.-G..(2020).Computation-guided design of high-performance flexible thermoelectric modules for sunlight-to-electricity conversion.Energy & Environmental Science,13(10).
MLA	Xu S.,et al."Computation-guided design of high-performance flexible thermoelectric modules for sunlight-to-electricity conversion".Energy & Environmental Science 13.10(2020).